Cultivator-tooth



(No Model.)

G. OARROTHERS.

CULTIVATOR TOOTH.

Patented May 19, 1885.

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Y GEORGE OARROTHERS, OF PIEDMONT, OHIO.

CULTIVATOR-TOOTH.

SPECIFICATION forming part of Letters Patent No. 317,971, dated May 19,1885. Application tiled March 10,1885. (No model.)

T0 all whom it may concern.-

Be it known that I, GEORGE CARRoTHERs, a citizen of the United States,residing at Pied- Vmont, in the county of Harrison and State of Ohio,have invented certain new and useful Improvements in Cultivator-Teeth;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanyingdrawin gs, and to letters and figures of referencemarked thereon,which form a part of this specification.

This invention has relation to spring-tooth cultivators. It consists inthe combination, with a pivoted shoe, of a guard secured at one end tothe upper end of the shoe and extending and bearing at its upper endalong the front side of a standard.

The invention further consists in the combination of the standardprovided with a loop or keeper, of the shoe pivoted to such standard,and a guard-plate pivoted at one end to the upper end of the shoe andhaving its other end projected through and movable within the keeper onthe standard.

It consists, further, in other improvements, which will be hereinaftermore fully described and claimed.

In the drawings, Figure l is a side view of a cultivator provided withmy improvements. Fig. 2 represents the spring-tooth attachments invertical section in position on the standard. Fig. 3 is a detail view ofthe guard-plate. Fig. 4 is a detail view of the shoe. Fig. 5 is a detailview of the shovel, and Fig. 6 is a detail View of the links and spring,all of which will be described.

The construction shown in Fig. l in the region of the spindle and thedevices for supporting the drag-bar have been included in a separateapplication for patent of even date herewith, and for such reasondetailed description of same will not be made herein.

The standard A is usually bent from the rear end of the drag-bar A tothe lower end of the standard.

I pivot at b the shoe B. This shoe may have the shovel integrally formedon it, but it is preferably adapted to receive such shovel, and thelatter is secured in the manner I will now describe.

On the lower end of the shoe I form :a tenon, B, in the front side ofwhichI form vertical serrations b', fitted to receive a tongue on therear side of the tooth. This tooth Chas fixed to its rear side a ring,C, fitted to embrace the tenen B', and is provided within said ring witha tongue, C2, which is adapted to engage any one of serrations b in thetenon.

A set-screw, G3, turns through the rear side of the ring O, and bearsagainst the tenon B', so that the tongue C2 is held in engagement withany one desired of the serrationsB, and the tooth secured firmly inposition. By loosening the screw and adjusting its tooth from side toside the same may be set to any angle desired and held at such angle bytightening the screw, aswill be understood.

On the standard A,I secure aloop or keeper,

A2, to receive the upper end of the guard-plate D. This guard-plate ispivotally secured at its lower end to the upper end of the shoe, and asthe said shoe is forced back by engagement with the stone or otherobstruction, the guardplate moves outward at its lower end with theupper end of said shoe, and prevents dirt, grasses, or otherobstructions from getting behind the upper end of the shoe, and impedingthe free return of said shoe to its operative position when theobstruction has been passed.

It is manifest that instead of pivoting the guard-plate to the shoe andholding the other end thereof in the keeper A2, the said guardplatemight be formed of spring-metal having its lower end rigidly secured tothe upper end of the shoe, and its upper end formed with a tensionrearwardly, so as to hold it in engagement with the front side of thestandard; but I prefer the construction as shown and before described. Ialso prefer to provide the said guard-plate near its pivot with gears orwings d, which project rearwardly on opposite sides of the standard andprevent ingress laterally of anything to clog the part. These wings alsoserve to strengthen and guide the guard-plate in its motions.

From the rear side of the standard,about in rear `of the upper end ofthe shoe,I project a rod, E. On this rod I secure a follower-block,

F, which is movable along the rod and held normally at the outer end ofsuch rod by means of a spring, G, which bears between the fol-'-lower-block and the standard.

Links H H are pivoted at their outer ends to the opposite sides of thefollower-block and have their other ends extended alongside of andpivoted to the upper end of the shoe. When the lower end or shovel ofthe shoe engages a stone, root, or other unusual obstruction, the springwill permit it to ride over such obstruction, and when passed will causeit to resume its operative position.

By the arrangement of rod E, follower F, and links I-I, I arrange thespring mechanism in rear of standard, render practical the use of l acoil-spring in suchlocation, and avoid the use of levers and similarcomplicating mechanism.

Having thus described my invention,what I claim, and desire to securebyLetters Patent, is

l. The combination of a standard, a shoe pivoted to said standard, and aguard secured at its lower end to the shoe and bearing at its upper endagainst the standard above the shoe, substantially as set forth.

2. The combination of a standard, a shoe pivoted to said standard, akeeper on said standard above said shoe, and a guard pivotally securedat its lower end to the shoe and having its upper end held movablewithin the keeper, substantially as set forth.

3."The combination of a standard, a shoe pivoted to said standard, and aguard secured at its lower end to the shoe and bearing at its upper endagainst the standard, said guard being provided with jaws projectedrearwardly on opposite sides of the standard, substantially as setforth. 4. rIhe combination of the standard, arod or bar Xed to andprojected rearwardly from said standard, a follower-block placed on saidrod or bar, a shoe pivoted to the standard, links secured at one end tothe pivoted shoe and having their other ends carried in rear of thestandard and connected with the followerblock, and a spring placed onthe rodor bar and bearing between the standard and the follower-block,substantially as set forth.

5. The combination, -in a cultivator, of the standard provided on itsfront side with a loop or keeper and with a rod or bar projectedrearwardly, as described, the shoe pivoted to the standard, the guardvconnected with the upper end of the'shoe, the follower-block placed onthe rod or bar, aspring'on said rod or bar between the follower-blockand the standard, and links connecting the upper end of the shoe and thefollower-block, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE oAnEorHEEs.

Witnesses:

R. E. SEAEs, GEO. H. CoLLINs.

